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1309 Hyperborea (1931 TO)
Classification:
Outer Main-belt Asteroid
SPK-ID:
2001309
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Ephemeris
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Orbit Diagram
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Orbital Elements
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Physical Parameters
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Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB
Reference: MPO02605
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
0.1526482
n/a
a
3.2007294
n/a
AU
q
2.7121438
n/a
AU
i
10.29245
n/a
deg
node
206.18613
n/a
deg
peri
246.26805
n/a
deg
M
169.90211
n/a
deg
t
p
2454213.3841135
(2007-Apr-22.88411350)
n/a
JED
period
2091.5674276
5.73
n/a
n/a
d
yr
n
0.17211972
n/a
deg/d
Q
3.6893150
n/a
AU
Orbit Determination Parameters
# obs. used (total)
140
first obs. used
1919-??-??
last obs. used
1999-11-08
# oppositions
19
planetary ephem.
DE403
quality code
1
fit RMS
0.88
data source
MPC:mpn
producer
Williams
Additional Information
T_jup
= 3.151
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
10.20
mag
n/a
IRAS-A-FPA-3-RDR-IMPS-V6.0
IRAS observations used: 18
diameter
diameter
57.15
km
3.9
IRAS-A-FPA-3-RDR-IMPS-V6.0
IRAS observations used: 18
rotation period
rot_per
13.95
h
n/a
IAU Lightcurve Data
(A.W. Harris, E-mail Mar. 2006)
Published Reference List:
[Apostolovska, G., Ivanova, V., Borisov, G.: 2004, Minor Planet Bul. 31, 44-45.]
geometric albedo
albedo
0.0450
0.007
IRAS-A-FPA-3-RDR-IMPS-V6.0
IRAS observations used: 18
1309 Hyperborea (1931 TO)
Discovered 1931-Oct-11 by Neujmin, G. at Simeis (094)
Reference:
DISCOVERY.DB
Last Updated:
2003-08-29
Alternate Designations
1931 TO
= 1934 GT = 1971 SG1 = 1973 AW4 = A919 RB = A919 SH
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2010-Feb-10 07:49 UT
(server date/time)
Site Manager:
Donald K. Yeomans
Webmaster
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Alan B. Chamberlin
